The clinic nurse explains to a student that the hormone responsible for limiting the maternal immune response to pregnancy is which of the following?
A.
Human chorionic gonadotropin
B.
Progesterone
C.
Prostaglandin
D.
Relaxin
ANS: A
Human chorionic gonadotropin may play a role in limiting the maternal immune response to the pregnancy. Prostaglandins modulate hormonal activity and have an effect on ovulation, fertility, and cervical mucus viscosity. Relaxin aids in the softening and lengthening of the uterine cervix and works on the myometrial smooth muscle to promote uterine relaxation.
Progesterone functions to create a highly vascular secretory endometrium that will be suitable for implantation of a fertilized ovum.
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